Research Designs Assignment Example | Topics and Well Written Essays - 250 words

Research Designs - Assignment ExampleThis helps us to verify that the effects seen are truly due to the said Independent variable and non other factors.A true experimental plan has all these components and thus offers the most reliable information and analysis (Kerlinger, 1986). An exercise of a true experimental study would be when a new medicine is being tested, and divers(prenominal) dosages are given to different groups to test its efficacy. A control group in not given the medicine, but a placebo instead. The dosage levels are varied as per to impression of the professional researcher and the sample chosen is such that it represents the larger population from which it comes. On the other hand, a cross-sectional design and a quasi-experimental design would not allow for manipulation of the independent variable or for the presence of a control group given the nature of the Independent variables under study (Frankfort-Nachmias & Nachmias, 2008). An example of a cross-section al study would be a study that tried to verify the type of music preferred across different age groups. Although the experimenter digest choose the range of each group there is no control group for this study. On the other hand, a quasi-expeimental design would be one where the efficacy of different treatment options for an illness are compared (Frankfort-Nachmias & Nachmias, 2008). The researcher cannot assign treatment options and has to collect data from participants who choose the said options. There can be a control group only if there are people who choose to abstain from treatment. The least strong type of study is one that uses a pre-experimental design (Frankfort-Nachmias & Nachmias, 2008), which only allows for comparison or observation. A typical pre-experimental design is when a group is tested for knowledge before and after a training use and then the two scores are compared for difference.The strength of the research design